JPS603714Y2 - Harvester grain culm weeding device - Google Patents

Description

[Detailed description of the invention] The present invention uses a self-propelled harvester to remove the culms planted in the field, separate the weeds while removing tangles from the tips of the culms, and pass them through the culm lifting mechanism to the reaping and conveying section. This invention relates to a culm splitting device for feeding the weeds into a culm.More specifically, in front of the culm lifting mechanism located in front of the reaping conveyance section, a plurality of tines on an endless chain are installed from below along the forward direction of the combine harvester. A culm weeding device is provided with a weeding culm mechanism that moves upward, and the culm is pulled up while separating the reaped culm that enters the pulling mechanism and the non-reaped culm that does not enter. It is about improvement.

In this way, in front of the culm lifting mechanism located in front of the reaping conveyance unit, a weed cutting mechanism is installed in which a plurality of tines on the endless chain move upward from below along the forward direction of the combine. A culm weeding device that divides the weeds into cut culms that enter the pulling mechanism while pulling up the culms, and uncut culms that do not enter the pulling mechanism is disclosed in Japanese Patent Application Laid-Open No. 4881FF as a prior art. Are known.

The weed cutting mechanism in the culm weeding device of this prior art is configured to end the weeding action by tilting the tines backwards, that is, downward, with respect to the moving direction at the upper part of the weeding cutting mechanism. I have to.

Therefore, as each tine in the upper part tilts backward and rotates, the tip of the culm is no longer supported by each tine, so the tip hangs forward, and in this hanging state, the weeding action is performed. At the end of the mold hole, the tip of the tip lowers forward and is struck by the next tine.
This resulted in more grains being shed.

The present invention solves the above-mentioned drawbacks by configuring the protruding height of the tines in the weed cutting chain mechanism of this type of culm weeding device to be higher at the lower part and lower at the upper part of the weed cutting chain mechanism. This is what I did.

Next, an example of the present invention will be explained with reference to a drawing of an embodiment of a combine harvester. In the figure, 1 indicates a combine machine body having running rollers 2, and a threshing section 4 equipped with a foot chain 3 is installed on the upper surface of the machine body 1. A shell culm pretreatment section 7 is provided in front of the frame 5 and 6 through frames 5 and 6 that protrude from the top and bottom of the body 1.

This pre-processing section 7 includes a plurality of (four in this embodiment) culm lifting mechanisms 8 installed between the front ends of both the frames 5 and 6 with their upper portions inclined rearward, as is conventionally known. The reaping transport section 9 consists of a reaping mechanism 10 attached to the lower frame 6, and a stock transport mechanism 1 located above the reaping mechanism 10.
1 and two rows of upper and lower rows of ear tip conveying mechanisms 12 and 13, and between the rear ends of these mechanisms and the foot chain 3, the stock base of the harvested grain culm is held and conveyed to the foot chain 3. A vertical transport mechanism 17,18 for feeding is mounted.

The plurality of lifting mechanisms 8 are arranged as a pair and form a culm passage 19, 19 between them, while a large number of tines 20 are provided in an endless chain installed in the case so as to be able to rise and fall freely, and the tines 20 are connected to a combine harvester. The tines 20 of each pulling mechanism 8 are arranged so as to move upwardly from below in the shell culm passage 19, 19 in a direction perpendicular to the traveling direction of the
It is configured to stand up when moving through a shell culm passage 19.19 formed between a pair of pulling mechanisms, and is located at the lower front and both culm passages 19.19 of the pulling mechanisms 8, 8 on both left and right sides of the combine harvester. The adjacent pulling mechanisms 8 between
, 8 are provided with grass bridging bodies 21, 21° 21, which are attached to the lower frame 6, respectively.

22.22.22 shows a weeding chain mechanism provided between the pulling mechanism 8 at the rear position of each weeding body 21, 21°21, and each weeding chain mechanism 22 has a case 23 with a box-shaped cross section. , upper and lower sprockets 24 and 25 in the case 23
It consists of an endless chain 26 wound between 1. The case 23 has a chino case 27 and an arm 28 that protrude from the upper frame 5 in front of the upper part of the lifting mechanism 8 so that the chino 26 is perpendicular to the tines 20 in the lifting mechanism 8, that is, parallel to the direction of movement of the combine harvester. The chino 26 in each case 23 is attached to a tubular body 29 mounted between the tubular bodies 29 so that its upper part is inclined rearward, and the lower end of the chino faces the rear surface of the weeding body 21.
The transmission shaft 31 in the upper frame 5 is connected to the shaft 30 inserted in the
From the bevel gear pair 32 and the chino 33 in the chino case 2 f.
The endless chain 26 is provided with a large number of tines 34 at appropriate intervals, and the tines 34 are connected to the case 23. It is configured to move upward from below while the combine front side 23a side is erected.

A bulge 23b is provided at the upper part of the case 23 of each weeding chino mechanism 22 to cover and hide the protruding tines 34, and an inclined surface 23c is formed between the bulge 23b and the front surface 23a. Case 23 when each tine 34 moves upward from below in an upright state.
The protruding height from the front surface 23a of the case 23 is configured such that it has a high dimension 11 on the lower side of the case 23 and a low dimension 12 on the upper side of the case 23.

In this configuration, the culm to be planted in the field first enters the culm passage 19, 19 in the pulling mechanism 8 by the cutting body 21, 21. , 19, and then, as they are being pulled upward by the moving tines 34 in each weed cutting chain mechanism 22, the tangles of the tips of the cut and non-cut husk culms are removed. While being sorted, the reaped husk culms are pulled up by the weed cutting machine mechanism 22 and the pulling mechanism 8, and then sent to the reaping mechanism 10, the stock head conveying mechanism 11, and the ear tip conveying mechanism 12, 13.

In this case, in order to improve the weeding action of the weeding culm pulling mechanism 22, the front surface 23 of the case 23 should be
It is possible to increase the length of action on the culm by increasing the protrusion height from a, but if the protrusion height of the case 23 of each tine 34 is high, the extension of the culm at the upper part of the case 23 will end. Up to this point, the tip of the culm is in contact with the tines for a long time, and the tip of the tip is rubbed a lot, which results in a lot of grain shedding.In order to reduce this shedding, the protrusion height of each tine 34 is lowered, and the lower part of the case 23 is At the beginning of the triggering process, the effect becomes uncertain.

In contrast, the present invention is configured so that the protruding height of the tines when they move upward from the bottom in an upright state as described above is higher at the lower part of the weeding chain mechanism and lower at the upper part. Therefore, at the beginning of the pulling weeding at the lower part of the case 23, the entire culm can be reliably caught by the tines 34 of the protruding height and pulled upward while being separated. In the upper part where the culm ends, the protrusion height of each tine 34 in the upright state is lower, so that the culm is less likely to be caught by each tine 34 while the culm continues to be pulled up and divided by each tine 34. Therefore, the heavy tip of the culm can be held until the end so that it does not sag forward, and the straining action of the tines on the tip is reduced.

Therefore, the present invention is capable of reliably pulling and weeding the culm to each tine in the weeding chain mechanism, while eliminating forward drooping of the tip of the culm until the end of the weeding process. Since the straining action of the tines of the weed chain mechanism on the tip of the ear can be reduced, the culm can be reliably pulled up and weeded under conditions where the tip of the ear is not threshed much.

[Brief Description of the Drawings] The drawings show an embodiment of the present invention, in which Fig. 1 is a front side view of the combine, Fig. 2 is a front view of the combine, Fig. 3 is an enlarged view of the weeding chain mechanism, and Fig. 4 is a side view of the front of the combine. The figure is an enlarged sectional view taken along the line IV-IV in FIG. 1. DESCRIPTION OF SYMBOLS 1... Combine harvester body, 8... Culm lifting mechanism, 9... Reaping conveyance part, 10...
・Reaping mechanism, 11...Stock base conveyance mechanism, 12,1
3... Ear tip conveyance mechanism, 22... Grass splitting chain mechanism, 26... Che 7.34...
tine.

Claims (1)

[Scope of utility model registration request] At the front of the culm lifting mechanism located in front of the reaping mechanism, there is provided a weed cutting cheno mechanism equipped with a cheno that rotates in the vertical direction parallel to the traveling direction of the harvester, and the weed cutting cheno mechanism includes: In a shell culm weeding device, the front part of the harvester is provided with tines that move upward from below in an upright state at appropriate intervals, and the protrusion when each tine in the weeding cheno mechanism moves upward from below in an upright state. A shell culm weeding device for a harvester that is configured to have a height that is high at the bottom and low at the top of the weeding cheno mechanism.